About Borides

Zirconium Boride

Borides are chemical compounds formed when boron bonds with a less electronegative element. Borides are all hard, high-melting-point materials with metal-like conductivity. They can be made by direct combination of the elements at high temperatures or, more usually, by high-temperature reduction of a mixture of the metal oxide and boron oxide using carbon or aluminium. Chemically, they are stable to non-oxidizing acids but are attacked by strong oxidizing agents and by strong alkalis. Borides can be classified loosely as boron-rich or metal-rich. The generally accepted definition is that if the ratio of boron atoms to metal atoms is 4:1 or more the compound is boron-rich, if it is less, then it is metal-rich.

Boron-rich boride properties vary from one compound to the next, and include examples of compounds that are semiconductors, superconductors, diamagnetic, paramagnetic, ferromagnetic or anti-ferromagnetic. They are mostly stable and refractory. One such compound, lanthanum boride (LaB6), is an inert refractory compound, used in hot cathodes because of its low work function for emission of electrodes.

Borides formed with transition metals tend to form metal-rich borides. Metal-rich borides are typically inert and have high melting temperatures. Investigations into these borides have revealed a wealth of interesting properties such as superconductivity at 39 K in magnesium diboride (MgB2) and the ultra-incompressibility of OsB2 and ReB2.

Recent Research & Development for Borides

Group-VIII transition metal boride as promising hydrogen evolution reaction catalysts., Wei, Guang-Feng, Zhang Ling-Ran, and Liu Zhi-Pan , Phys Chem Chem Phys, 2018 Sep 19, (2018)

Coupling of Methane and Carbon Dioxide Mediated by Diatomic Copper Boride Cations., Chen, Qiang, Zhao Yan-Xia, Jiang Li-Xue, Chen Jiao-Jiao, and He Sheng-Gui , Angew Chem Int Ed Engl, 2018 Oct 22, Volume 57, Issue 43, p.14134-14138, (2018)

Unexpected stable phases of tungsten borides., Zhao, Changming, Duan Yifeng, Gao Jie, Liu Wenjie, Dong Haiming, Dong Huafeng, Zhang Dekun, and Oganov Artem R. , Phys Chem Chem Phys, 2018 Oct 03, Volume 20, Issue 38, p.24665-24670, (2018)

Ultrathin Amorphous Iron-nickel Boride Nanosheets for Highly Efficient Electrocatalytic Oxygen Production., Wang, Xin, Nsanzimana Jean Marie Vian, Reddu Vikas, Peng Yuecheng, Huang Zhenfeng, and Wang Cheng , Chemistry, 2018 May 23, (2018)

Synthesis of Magnesium Nickel Boride Aggregates via Borohydride Autogenous Pressure., Shahbazi, Mahboobeh, Cathey Henrietta E., and Mackinnon Ian D. R. , Materials (Basel), 2018 Mar 23, Volume 11, Issue 4, (2018)

Ab initio inspired design of ternary boride thin films., Moraes, Vincent, Riedl Helmut, Fuger Christoph, Polcik Peter, Bolvardi Hamid, Holec David, and Mayrhofer P H. , Sci Rep, 2018 Jun 18, Volume 8, Issue 1, p.9288, (2018)

Electrocatalytic Oxidation of 5-(Hydroxymethyl)furfural Using High-Surface-Area Nickel Boride., Barwe, Stefan, Weidner Jonas, Cychy Steffen, Morales Dulce M., Dieckhöfer Stefan, Hiltrop Dennis, Masa Justus, Muhler Martin, and Schuhmann Wolfgang , Angew Chem Int Ed Engl, 2018 Jul 09, (2018)

Thermal activation of methane by vanadium boride cluster cations VB (n = 3-6)., Chen, Qiang, Zhao Yan-Xia, Jiang Li-Xue, Li Hai-Fang, Chen Jiao-Jiao, Zhang Ting, Liu Qing-Yu, and He Sheng-Gui , Phys Chem Chem Phys, 2018 Feb 14, Volume 20, Issue 7, p.4641-4645, (2018)

Structure and properties of a novel boride: ThNiB., Steiner, Soner, Rogl Gerda, Michor Herwig, Rogl Peter, Giester Gerald, and Gonçalves Antonio Pereira , Dalton Trans, 2018 Aug 22, (2018)

Highly Tunable Hollow Gold Nanospheres: Gaining Size Control and Uniform Galvanic Exchange of Sacrificial Cobalt Boride Scaffolds., Lindley, Sarah A., Cooper Jason K., Rojas-Andrade Mauricio D., Fung Victoria, Leahy Conor J., Chen Shaowei, and Zhang Jin Z. , ACS Appl Mater Interfaces, 2018 Apr 18, Volume 10, Issue 15, p.12992-13001, (2018)

Screened moments and extrinsic in-gap states in samarium hexaboride., Fuhrman, W T., Chamorro J R., Alekseev P A., Mignot J-M, Keller T, Rodriguez-Rivera J A., Qiu Y, Nikolić P, McQueen T M., and Broholm C L. , Nat Commun, 2018 Apr 18, Volume 9, Issue 1, p.1539, (2018)

Samarium hexaboride is a trivial surface conductor., Hlawenka, P, Siemensmeyer K, Weschke E, Varykhalov A, Sánchez-Barriga J, Shitsevalova N Y., Dukhnenko A V., Filipov V B., Gabáni S, Flachbart K, et al. , Nat Commun, 2018 02 06, Volume 9, Issue 1, p.517, (2018)

Magnesium diboride (MgB2) as a saturable absorber for a ytterbium-doped Q-switched fiber laser., Morshed, Monir, Hattori Haroldo T., Haque Ahasanul, and Olbricht Benjamin C. , Appl Opt, 2017 Sep 20, Volume 56, Issue 27, p.7611-7617, (2017)

Catalytic Reductions and Tandem Reactions of Nitro Compounds Using in Situ Prepared Nickel Boride Catalyst in Nanocellulose Solution., Prathap, Kaniraj Jeya, Wu Qiong, Olsson Richard T., and Dinér Peter , Org Lett, 2017 Sep 15, Volume 19, Issue 18, p.4746-4749, (2017)

Formation and Characterization of Hydrogen Boride Sheets Derived from MgB by Cation Exchange., Nishino, Hiroaki, Fujita Takeshi, Cuong Nguyen Thanh, Tominaka Satoshi, Miyauchi Masahiro, Iimura Soshi, Hirata Akihiko, Umezawa Naoto, Okada Susumu, Nishibori Eiji, et al. , J Am Chem Soc, 2017 Oct 04, Volume 139, Issue 39, p.13761-13769, (2017)